| commit | fcb7381265e6cceb1d54283878d145db52b9d9d7 | [log] [tgz] |
|---|---|---|
| author | Paul E. McKenney <paulmck@kernel.org> | Mon Jan 06 11:59:58 2020 -0800 |
| committer | Paul E. McKenney <paulmck@kernel.org> | Thu Feb 20 16:00:45 2020 -0800 |
| tree | 15e2312520978a9d75c899589dee35dd57026896 | |
| parent | bb6d3fb354c5ee8d6bde2d576eb7220ea09862b9 [diff] |
rcu-tasks: *_ONCE() for rcu_tasks_cbs_head The RCU tasks list of callbacks, rcu_tasks_cbs_head, is sampled locklessly by rcu_tasks_kthread() when waiting for work to do. This commit therefore applies READ_ONCE() to that lockless sampling and WRITE_ONCE() to the single potential store outside of rcu_tasks_kthread. This data race was reported by KCSAN. Not appropriate for backporting due to failure being unlikely. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>